论述了城市空气污染物(即阴极气体杂质)对质子交换膜燃料电池(PEMFC)性能的影响。
This paper reviews the influence of air contaminants, i. e., impurities in air stream of cathode, on the performance of proton exchange membrane of fuel cells (PEMFC).
显示器：一种视觉媒介，它用阴极射线、气体放电或其他装置来显现字符。
Display unit: a visual means of showing characters; using a cathode ray tube, GAS discharge or other type of device.
通过研究铜空心阴极激光器阈值特性、气体混合比和放电温度对激光输出功率的影响，给出了一些新的结果。
Some new results are given through investigation on threshold feature of the laser, effect of gas mixture ratio and discharge temperature on the laser output power etc.
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